I know I mentioned this before, but since you opened up the possibility to models and puppets, you should check out http://www.therpf.com/

There are tons of talented model and puppet makers that have already built studio scale ships, and life size puppets. I am sure if you put out an interest you can get tons of people who would loan you the things you need/want just to be apart of your Revisted edits, instead of building them yourself.

I believe Tom has already built a wampa head